Pump



Sept. 25 1923.

E. J. BAISDEN PUMPv Filed Sept. 8, 1922 2 Sheets-Sheet 1 E17. Ecn 5cl@im INVENTOR A'I'I'ORN EY WITNESS:

Sept. 25, 1923. 1,469,146

E. J. BAISDEN PUMP Filed Sept. 8 1922 2 Sheets-Sheet 2 l'NvENToR E. ef.Bmw 502 @w WITNESS:

Patented Sept. 25, 1923.

nutren crates Ltd@ narrar onirica.

EDWARD JI BMSDEN, F NEW YORK, Y.y y I TUM.

Application led September 8, 1922. Serial No. 586,926.

This inventlon relates to improvements in air compressors and has for anobject the provision of means whereby the action of` the springs of anautomobile o rother` vehicle may be utilized for supplying air underpressure to a storage tank for use 1n inflating pneumatic tires and forother. purposes.

Another obj ect of the invention 1s the rovision of means whereby theflow of air om the compressor or pump to the tank will be automaticallyvinterrupted when pressure in said tank' reaches a predetermined degreeand automatically restored, when said pressure drops to a predetermineddegree.

With the above and other objects in view, the invention further includesthe following novel features and details of construction,

to be hereinater more fully described, illustrated in the. accompanyingdrawings and pointed out in the appended claims.

Figure 1 is an elevation with parts in section of an automobile suppliedwith my invention. l

Figure 2 is av partial plan view. f

Figure 3 is an enlarged view showing the i arrangement of parts at oneend of the automobile, Y

Figure 4 is a detail view of the regulator. Figure 5 is a sectionaldetail view of one of the pumps or compressors.

Figure 6 is a sectional detail view of one of the valves.

Referring in detail to the drawings, wherein like characters ofreference denote corresponding parts, the reference character 10indicates the frame of an automobile or other vehicle, which issupported upon axles 11, by means of springs 12, all of which form nopart of the invention and may be of any suitable character orconstruction.

Mounted upon the frame 10 by means of cross bars or other suitable meansis a storage tank or reservoir 14, while secured to the frame 10 andeach spring is a plurality of pumps or compressors 15. These compressorsmay be of any suitable character, such as the piston type as shown. @nemember of the compressor is secured to the spring while the other ormovable member of the compressor is secured to the frame, so that actionof the spring will operate the compressor. In the drawings there arefour compressors of the piston type shown, the cylinders of which aresecured to the springs by clamps 13 while the rods 16 of their plstonsare secured to the frame as shown at 17 These cylinders are incommunication with the tank 14 by means of pipes 18l and the latter haveincluded therein check valves 19 which act to permit the passage'of airfrom the compressors to the tank but prevent passage of air in anopposite direction. y v

y The action of vthe springs 12 incident to the travel of the vehicleover ordinary roads, will operate the compressors to force air underpressure into the tank 14, so that a supply of air may be maintained forvarious uses, such as forthe inflation of pneumatic tires, as shown inthe drawings. Each com-` pressor is provided vwith a telescopic pistonrod, as shown at 16 and a spring 16 tends to hold the parts'with thepistonfin raised position. as shown in Figure 5.

A jack 20 is hinged at its upper end to the lower part of -eachclamp 13and the cylinder of each j ackis connected by the exible tubey 21 andthe'M pipe 22 with the tank 1d. A three-way valve 23 is arranged in eachpipe 22, said valve being operatedbypany suitable form of handle, asshown at 24. This valve is so arranged that when turned in onedirection' it will permit air to pass from the storage tank into thejack to actuate the same and when turned in another direction it willclose communication to the tank and connect the interior of the jackcylinder with the atmosphere. Thus the vehicle can be easily and quicklyjacked up whenever desired. rlhe hinged rod 20 of each jack is providedwith a crank 23' to which is connected an operating rod 40 which isslidably supe ported by a sleeve 25 carried by a bracket 26 which issecured to the spring 12. The rod is provided with a handle and aplunger 27 carried by the sleeve engaging notches 28 acts to hold thejack in its adjusted position. A shoe 29 is connected with the pistonrod of the jack and a perforated ear 30 on said shoe is adapted toengage with a hook 31 on the bracket 25 for holding the parts with thepiston of the jack in its inner position.

l also provide means for automatically controlling the air pressurewithin the tank la. Such means consists of a cylinder 324 MMP which isconnected with the pipe leading from tank 14, adjacent the connection ofsaid pipe With said tank, so that. the pressure within the tank will actagainst the piston 33 in the cylinder and when the air pressureovercomes the spring 34, which keeps the piston in its forward position,the rod 35, through means of the link 36, will turn the valve 37 so asto disconnect the tank from the pump or compressor and place the pump incommunication with the atmosphere. Thus by using a spring 34 oftheproper strength a predetermined amount of pressure can be held in thetank 14: for as soon as the pressure in said tank becomes greater thanthe strength of the spring the piston 33ywill be moved outwardly, thusactuating the valve 37 so as to -prevent air from entering the tank andpermitting the air from the pump to go to waste. When the pressure inthe tank falls the spring -will return the parts to normal position sothat the compressed air from the pump will flow into the tank.

From the foregoing it will be seen that the action of the springs of thevehicle incident to the travel of the same over roads will operate thecompressors and thus force air into the storage tank. When the vehicleis to be jacked up it is simply necessary to swing down the jacks bymeans Aof the rods and then open the valves 23 to permit the air fromthe tank to How into the cylinders of the jacks and thus raise theWheels of the vehicle oil the ground. When'the vehicle is to 'be loweredthe valves 23 are moved to another position so as to permit the air fromthe jack to tlow to waste and to prevent the air from the tank to Howinto the jack. By making the piston rods of the pumps teletessuto scopicthere is no danger of injuring the pump parts by undue movement ofthebody on the chassls. When the jacks are swung upwardly and the shoesplaced in engagement with the hooks the parts will be held l parts,provided that such changes fall with;Y

1n the scope of the appended claims.

Having described the invention what is claimed is l. In a vehicle, anair compressor actuated by the expansion and contraction of the sprlngsof the vehicle, a storage tank, means for connecting the samewith thecompressor,means controlled by the air pressure within the tank forautomatically interrupt ing the How of air into the tank when thepressure exceeds a certain degree, a jack hngedly connected with a partof the vehicle, manually operated means for connecting the jack with thecompressed air tank and means for normally supporting the jack in raisedposition with.v its shoe in retracted position.

2. lln a vehicle, an air compressor actuated by the expansion andcontraction of the springs of the vehicle, said compressor including acylinder, a piston therein, a tele-` scopic piston rod and spring meansfor holding the piston rod in its raised position.

In testimony whereof ll" ax my signature.

nnwann a. saisons.

